Photo Enhancement for Video Screenshot

I need a high-quality enhancement of a photo taken from a video screenshot. The primary focus should be on increasing sharpness, with a specific emphasis on improving detail clarity. The enhancement should target the face/people in the photo for better visibility and definition... (Budget: £20 - £250 GBP, Jobs: Image Analysis, Image Processing, Image Recognition, Photo Editing, Photo Restoration, Photo Retouching, Photography, Photoshop, Video Editing, Visual Arts)